> For the complete documentation index, see [llms.txt](https://docs.factor.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.factor.fi/factor-building-blocks/leverage/concepts.md).

# Concepts

The Leverage Building Block enables DeFi lending operations to be seamlessly combined into more complex strategies. This requires leveraging segment specific concepts that have been implemented by multiple DeFi protocols as listed below:

<table data-view="cards"><thead><tr><th></th><th data-hidden></th><th data-hidden></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><a href="/pages/oTk2zWV2O9X3kdzRAvRB"><strong>Collateralized Lending &#x26; Borrowing</strong></a> </td><td></td><td></td><td><a href="/pages/oTk2zWV2O9X3kdzRAvRB">/pages/oTk2zWV2O9X3kdzRAvRB</a></td></tr><tr><td><a href="/pages/A2bqdhLqQylsjzB7sTXP"><strong>Looping</strong></a></td><td></td><td></td><td><a href="/pages/A2bqdhLqQylsjzB7sTXP">/pages/A2bqdhLqQylsjzB7sTXP</a></td></tr></tbody></table>